656022 has 16 divisors (see below), whose sum is σ = 1354752. Its totient is φ = 211560.

The previous prime is 655987. The next prime is 656023. The reversal of 656022 is 220656.

It is a self number, because there is not a number n which added to its sum of digits gives 656022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656023) by changing a digit.

656022 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1578 + ... + 1949.

It is an arithmetic number, because the mean of its divisors is an integer number (84672).

2⁶⁵⁶⁰²² is an apocalyptic number.

656022 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

656022 is an abundant number, since it is smaller than the sum of its proper divisors (698730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

656022 is a wasteful number, since it uses less digits than its factorization.

656022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3563.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 656022 is about 809.9518504208. The cubic root of 656022 is about 86.8906010317.

Adding to 656022 its reverse (220656), we get a palindrome (876678).

The spelling of 656022 in words is "six hundred fifty-six thousand, twenty-two".